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EP3184679A1 - Procédé de fonctionnement d'un dispositif de filature à bout libéré et machine de filature à fibre libérée comprenant une pluralité de dispositifs de filature à fibre libérée disposés les uns derrière les autres - Google Patents

Procédé de fonctionnement d'un dispositif de filature à bout libéré et machine de filature à fibre libérée comprenant une pluralité de dispositifs de filature à fibre libérée disposés les uns derrière les autres Download PDF

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Publication number
EP3184679A1
EP3184679A1 EP16200132.5A EP16200132A EP3184679A1 EP 3184679 A1 EP3184679 A1 EP 3184679A1 EP 16200132 A EP16200132 A EP 16200132A EP 3184679 A1 EP3184679 A1 EP 3184679A1
Authority
EP
European Patent Office
Prior art keywords
rotor
spinning
open
cover element
negative pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16200132.5A
Other languages
German (de)
English (en)
Other versions
EP3184679B1 (fr
Inventor
Nour-Eddine Balboul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
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Filing date
Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP3184679A1 publication Critical patent/EP3184679A1/fr
Application granted granted Critical
Publication of EP3184679B1 publication Critical patent/EP3184679B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/22—Cleaning of running surfaces
    • D01H4/24—Cleaning of running surfaces in rotor spinning
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/42—Control of driving or stopping
    • D01H4/44—Control of driving or stopping in rotor spinning

Definitions

  • the present invention relates to a method of operating an open-end rotor spinning device and an open-end rotor spinning machine having a plurality of juxtaposed open-end rotor spinning devices.
  • Open-end rotor spinning machines have a multiplicity of workstations arranged next to one another. At the jobs, an open-end rotor spinning device is arranged in each case.
  • An open-end rotor spinning device comprises a rotor housing with a cover element for closing the rotor housing. In the rotor housing, a spinning rotor is arranged. The spinning rotor is rotatably mounted. The spinning rotor can be driven for spinning in various ways. It is known to drive the spinning rotors of several open-end rotor spinning devices via a common drive. The force can be transmitted from the common drive to the spinning rotors, for example by means of a belt. It is also known that each spinning rotor is associated with an electric motor single drive. In connection with a single drive, the spinning rotor is preferably mounted without contact. A non-contact storage may be formed as a magnetic storage. Contactlessly mounted spinning rotors with individual drives are particularly sensitive to contamination.
  • known open-end rotor spinning machines have a central vacuum source and a machine-length vacuum line.
  • the vacuum supply of the open-end rotor spinning devices is realized by a connection of the rotor housing to the machine-length vacuum line.
  • fiber material is introduced into the rotor housing via a fiber guide channel, and the finished spun yarn is withdrawn from the rotor housing via a yarn withdrawal channel.
  • the spinning rotor-side end of the thread take-off channel is located on a projection which is fixed to the lid member and projects into the spinning rotor.
  • the DE 10 2004 016 547 B4 discloses a method for cleaning a spinning rotor.
  • the cleaning is already carried out on the spinning or outgoing spinning rotor.
  • the lid member of the rotor housing is automatically opened by means of a movable maintenance device and the spinning rotor delivered a cleaning device, wherein a minimum speed of the spinning rotor is not exceeded.
  • the cleaning device should engage before a fiber ring comes loose from the rotor groove.
  • Such a cleaning device can, for example, seal the outer annular space surrounding the spinning rotor and thus prevent leakage of the fibers.
  • the process is intended to prevent fiber from laying around the neck with the thread withdrawal channel and being pulled out of the spinning rotor when the cover element is opened.
  • a method for operating an open-end rotor spinning device For spinning a rotor housing is closed with a cover element and applied by means of a vacuum supply with negative pressure, a spinning rotor rotates in the rotor housing and a stop attached to the lid member protrudes with a yarn withdrawal channel in the spinning rotor.
  • the rotational speed of the spinning rotor is reduced, the negative pressure in the rotor housing is above a first speed at which the centrifugal forces still hold a fiber ring in the rotor groove of the spinning rotor, and the fiber ring is displaced by shifting the lid member between an open position and a closed position below a second speed at which the fiber ring due to the decreasing. Centrifugal forces has already collapsed, sucked due to the restored negative pressure in the rotor housing.
  • the inventive method begins with this knowledge. Accordingly, the negative pressure in the rotor housing should be canceled before the centrifugal forces no longer hold a fiber ring located in the rotor groove in the rotor groove. By releasing the negative pressure, the air flow described above is suppressed. A collapsing due to the decreasing centrifugal forces fiber ring thus remains in the interior of the spinning rotor. Unlike the description in the prior art, it is therefore not necessary for a cleaning device to engage as quickly as possible. Rather, the fibers located in the interior of the spinning rotor can later be sucked off in a simple manner by a displacement of the cover element with restored negative pressure. Thus, the inventive method requires no additional cleaning device. The displacement of the cover element can be done by an adjusting device at the workplace.
  • the displacement of the cover element can be done while the spinning rotor is still rotating or when the spinning rotor is already stationary. The important thing is that the second speed, at which the fiber ring has already collapsed, is below. Otherwise, the displacement would be counterproductive and would do exactly what the present invention is intended to prevent, namely that fibers lay around the neck.
  • the other option is to switch off the vacuum supply of the open-end rotor spinning device.
  • the lid member may initially remain closed. Switching off the vacuum supply has the advantage that a vacuum source of the open-end rotor spinning machine is less stressed and energy is saved. The energy consumption of the vacuum source is significantly higher with an open rotor housing than with a closed rotor housing.
  • the cover element for sucking the collapsed fiber ring below the second speed with effective vacuum supply from the open position in the Closed position is transferred.
  • This process step can be carried out independently of the previous history.
  • the vacuum supply is effective and the lid member can be transferred directly to the closed position. If the cancellation of the negative pressure was achieved by switching off the vacuum supply, the cover element can be opened at some point. As long as the vacuum supply is turned off, the opening of the cover element has no effect. Before closing the cover element, however, the vacuum supply must be switched on again so that the collapsed fiber ring is also sucked off when closing.
  • the collapsed fiber ring can also be sucked off by the cover element is transferred below the second speed with effective vacuum supply from the closed position to the open position.
  • effective vacuum supply from the closed position to the open position.
  • the vacuum supply must then be turned on again before opening, preferably at a standstill of the spinning rotor.
  • the object is also achieved by an open-end rotor spinning machine for carrying out the method according to the invention with a plurality of juxtaposed open-end rotor spinning devices.
  • the open-end rotor spinning devices each have a rotor housing, a spinning rotor arranged in the rotor housing, a cover element for closing the rotor housing, which is displaceable between an open position and a closed position, an adjusting device for displacing the cover element between the open position and the closed position, one on the cover element fastened approach with a thread withdrawal channel which projects into the spinning rotor in the closed position, and a vacuum supply for acting on the rotor housing with negative pressure.
  • a control device is designed to control one or more open-end rotor spinning devices during braking of the spinning rotor such that the negative pressure in the rotor housing above a first rotational speed at which the centrifugal forces still hold a fiber ring in the rotor groove of the spinning rotor becomes. Furthermore, the control device is designed to control one or more open-end rotor spinning devices in such a way that the fiber ring is displaced the cover element between the open position and the closed position below a second speed at which the fiber ring has already collapsed due to the decreasing centrifugal forces, is sucked due to the restored negative pressure in the rotor housing.
  • control device for canceling the negative pressure is designed to control the adjusting device above the first rotational speed in such a way that the cover element is displaced into the open position.
  • a valve for switching off the vacuum supply is provided and the control device is designed to close the valve to switch off the vacuum supply above the first speed.
  • control device is designed to control the adjusting device so that the cover element is transferred below the second speed with effective vacuum supply from the open position to the closed position.
  • the control device may also be designed to control the adjusting device such that the cover element is transferred from the closed position to the open position below the second rotational speed when the vacuum supply is effective.
  • Open-end rotor spinning device of an open-end rotor spinning machine has the reference numeral 1 as a whole.
  • Such open-end rotor spinning devices each have, as is known, a rotor housing 2 in which a spinning rotor 3 rotates at high speed n.
  • the spinning rotor 3 is rotated by an electric motor single drive 33 in rotation.
  • the drive 33 simultaneously includes the magnetic bearing of the spinning rotor 3.
  • Fig. 1 it can be seen, the rotor housing 2 open towards the front itself during the spinning operation by a pivotally mounted lid member 8, in which a (not shown) channel plate is embedded with a seal 9, closed.
  • the rotor housing 2 is also connected via a corresponding vacuum line 10 to a vacuum source 11, which generates the spinning vacuum required in the spinning process in the rotor housing 2.
  • the vacuum line 10 forms the vacuum supply of the open-end rotor spinning device 1.
  • the negative pressure source 11 also supplies the other open-end rotor spinning devices of the open-end rotor spinning machine.
  • the vacuum line 10 a valve 31.
  • a projection 12 is arranged, which has the rotor-side end 13 of the thread withdrawal channel 15 and the mouth region of the fiber guide channel 14.
  • an opening roller housing 17 is fixed to the lid member 8, which is mounted rotatably limited about a pivot axis 16.
  • the cover element 8 has individual drives 19, 20 for an opening roller 21 or a sliver retraction cylinder 22 on the rear side.
  • the lid member 8 is formed on the open-end rotor spinning device 1 designed as a pneumatic cylinder actuator 32 is present.
  • the Fig. 1 shows the lid member in a closed position.
  • the lid member 8 pivots about the pivot axis 16 of the rotor housing 2 away.
  • the cover element 8 can thus be transferred to an open position.
  • the open-end rotor spinning device 1 is assigned a control device 34.
  • the controller 34 controls the actuator 32 and the valve 31 as needed.
  • the control device 34 is also designed to control the electric motor single drive 33.
  • the controller 34 may have connections to other elements of the workstation or open-end rotor spinning machine.
  • Fig. 2 is the spinning rotor 3 and projecting into the spinning rotor 3 approach 12 with the Fadenanzugskanal 15 shown only schematically to illustrate the flow conditions in the spinning rotor 3.
  • the spinning rotor 3 on the in Fig. 2 Not shown Faserleitkanal 14 fed to a sliver.
  • the fibers form a fiber ring 5 in the rotor groove 4.
  • the fibers collected in the rotor groove 4 are continuously incorporated into the thread end and the thread is withdrawn through the thread withdrawal channel 15.
  • the fiber ring 5 initially remains in the rotor groove 4 due to the centrifugal forces.
  • the Fig. 3 shows a curve of the rotational speed n during braking of the spinning rotor 3, plotted over time t.
  • the spinning rotor 3 initially rotates at the spinning speed n 0 .
  • the speed n is reduced, passing the speed n 1 .
  • the rotational speed n 1 is set so that the centrifugal forces keep the fiber ring 5 at this speed still safe in the rotor groove 5.
  • Above the speed n 1 the negative pressure in the rotor housing is released.
  • the cover element 8 can be opened by means of the adjusting device 32, or the vacuum supply 10 is switched off by closing the valve 31.
  • the control of the adjusting device 32 or the valve 31 by means of the control device 34.
  • the speeds n 1 and n 2 are dependent on different sizes, in particular on the rotor diameter, but also on the processed fiber material.
  • the rotational speeds at which the negative pressure is released and the fibers are sucked off can be determined in terms of parts and stored in the control device 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP16200132.5A 2015-12-19 2016-11-23 Procédé de fonctionnement d'un dispositif de filature à bout libéré et machine de filature à fibre libérée comprenant une pluralité de dispositifs de filature à fibre libérée disposés les uns derrière les autres Active EP3184679B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015016594.1A DE102015016594A1 (de) 2015-12-19 2015-12-19 Verfahren zum Betreiben einer Offenend-Rotorspinneinrichtung und Offenend-Rotorspinnmaschine mit einer Vielzahl nebeneinander angeordneter Offenend-Rotorspinneinrichtungen

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102015016594 Previously-Filed-Application 2015-12-19

Publications (2)

Publication Number Publication Date
EP3184679A1 true EP3184679A1 (fr) 2017-06-28
EP3184679B1 EP3184679B1 (fr) 2021-05-19

Family

ID=57421642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16200132.5A Active EP3184679B1 (fr) 2015-12-19 2016-11-23 Procédé de fonctionnement d'un dispositif de filature à bout libéré et machine de filature à fibre libérée comprenant une pluralité de dispositifs de filature à fibre libérée disposés les uns derrière les autres

Country Status (3)

Country Link
EP (1) EP3184679B1 (fr)
CN (1) CN106894122B (fr)
DE (1) DE102015016594A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017118390A1 (de) * 2017-08-11 2019-02-14 Saurer Spinning Solutions Gmbh & Co. Kg Offenend-Spinneinrichtung
CN109161994A (zh) * 2018-09-30 2019-01-08 苏州多道自动化科技有限公司 一种转杯自清洁驱动机构
WO2023057094A1 (fr) 2021-10-06 2023-04-13 Saurer Spinning Solutions Gmbh & Co. Kg Dispositif de filage, métier à filer à rotor, et procédé pour empêcher l'accumulation de fibres dans un dispositif de filage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035140B1 (fr) * 1970-10-05 1975-11-13
DE19956264A1 (de) * 1999-11-23 2001-05-31 Stahlecker Fritz Verfahren zum Reinigen eines Offenend-Spinnrotors
EP1612308A2 (fr) * 2004-06-16 2006-01-04 Saurer GmbH & Co. KG Procédé et dispositif pour actionner un métier à filer à bout ouvert
DE102005023517A1 (de) * 2005-05-21 2006-11-23 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
DE102004016547B4 (de) 2004-03-24 2013-08-22 Rieter Ingolstadt Gmbh Verfahren zum Öffnen bzw. Reinigen einer Spinnmaschine
EP2801646A1 (fr) * 2013-05-11 2014-11-12 Saurer Germany GmbH & Co. KG Procédé de fonctionnement d'un métiers à filer à bout libre à rotor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1191668A (en) * 1966-11-08 1970-05-13 Tmm Research Ltd Improvements relating to the Spinning of Textile Yarns
DE3511953A1 (de) * 1985-04-02 1986-10-09 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Offenend-spinnmaschine
DE4131666C2 (de) * 1991-09-23 1996-02-29 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Reinigen eines Offenend-Spinnrotors
DE4131684A1 (de) * 1991-09-24 1993-03-25 Rieter Ingolstadt Spinnerei Verfahren und vorrichtung zum reinigen eines offenend-spinnrotors
DE4244081C1 (de) * 1992-12-24 1994-01-13 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
DE19631234A1 (de) * 1996-08-02 1998-02-05 Rieter Ingolstadt Spinnerei Vorrichtung zur Steuerung eines Luftstromes in einer Offenend-Spinnvorrichtung
DE19718768A1 (de) * 1997-05-05 1998-11-12 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum pneumatischen Reinigen eines Fadenabzugsrohres
DE102006037849A1 (de) * 2005-08-12 2007-02-15 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren zur Steuerung einer Offenend-Spinnmaschine und Offenend-Spinnmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5035140B1 (fr) * 1970-10-05 1975-11-13
DE19956264A1 (de) * 1999-11-23 2001-05-31 Stahlecker Fritz Verfahren zum Reinigen eines Offenend-Spinnrotors
DE102004016547B4 (de) 2004-03-24 2013-08-22 Rieter Ingolstadt Gmbh Verfahren zum Öffnen bzw. Reinigen einer Spinnmaschine
EP1612308A2 (fr) * 2004-06-16 2006-01-04 Saurer GmbH & Co. KG Procédé et dispositif pour actionner un métier à filer à bout ouvert
DE102005023517A1 (de) * 2005-05-21 2006-11-23 Saurer Gmbh & Co. Kg Offenend-Spinnvorrichtung
EP2801646A1 (fr) * 2013-05-11 2014-11-12 Saurer Germany GmbH & Co. KG Procédé de fonctionnement d'un métiers à filer à bout libre à rotor

Also Published As

Publication number Publication date
DE102015016594A1 (de) 2017-06-22
CN106894122A (zh) 2017-06-27
CN106894122B (zh) 2022-05-24
EP3184679B1 (fr) 2021-05-19

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